Data Collections These fields are in addition to Dublin Core fields to describe MDL's data collections, including microdata, statistical data, and GIS data. Collection Which type of resource this is Statistics License Open Production Date 2009 Distribution Date 2010 Time Period 1950-2007 Distributor University of Toronto. Computing in the Humanities and Social Sciences (CHASS) Geographic Keywords International Mode of Data Collection derived Notes The reference year for PWT 6.3 is 2005. Series Penn world tables Data Type Time series statistical tables Keywords Economics and finance Links <a href="http://dc.chass.utoronto.ca/pwt/">DataviaCHASS</a> Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Penn world tables version 6.3 Creator An entity primarily responsible for making the resource Heston, Alan, Robert Summers and Bettina Aten Description An account of the resource Constructed by Robert Summers and Alan Heston of the University of Pennsylvania, together with the late Irving Kravis, the Penn World Tables are the definitive source for real national accounts data. The national accounts for each country, initially in their own currencies, are adjusted using detailed price data to obtain real national accounts in a common currency (U.S. dollars) across countries. These data are invaluable for making comparisons of Gross Domestic Product across countries, and for all manner of research on development and growth.